Probably you're printing the answer instead of returning it, read this: https://docs.codewars.com/training/training-example#writing-a-solution and this: https://docs.codewars.com/training/troubleshooting#expected-the-same
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Probably you're printing the answer instead of returning it, read this: https://docs.codewars.com/training/training-example#writing-a-solution and this: https://docs.codewars.com/training/troubleshooting#expected-the-same